[alliumnsk]

t

 
I agree basically with the advantages of on-sensor-focussing and also the problems with differerent adjustments on different distances (for primes) and FLs (for zooms). It's just, the PDAF is still more convincing to me on a D8ng the CDAF for adjusting the PDAF. That could be done with various distances and focal lengths. Camera on tripod, target (printed in the manual), LiveView - set the distance of the lens. Go to PDAF and check for the difference, the set the AF finetune values. This could be done automatically and without endless test series.

Let have more wishful thinking: machine learning, when camera learns AF adjust transparently to user